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1. (WO2018034758) ROTATING BRUSH SEAL WITH BRISTLE SHIELD

Pub. No.:    WO/2018/034758    International Application No.:    PCT/US2017/042318
Publication Date: Fri Feb 23 00:59:59 CET 2018 International Filing Date: Tue Jul 18 01:59:59 CEST 2017
IPC: F16J 15/3288
Applicants: GENERAL ELECTRIC COMPANY
ZHENG, Xiaoqing
PALMER, Gene David
MACK, Michael Dennis
KNORR, David Bruce
BOWERS, Jason Lyn
Inventors:
Title: ROTATING BRUSH SEAL WITH BRISTLE SHIELD
Abstract:
A brush seal has bristles with a free end sealing against a radially inward surface of a stationary component. The bristles are angled axially 15 degrees to 70 degrees, and circumferentially at an angle that is less than the axial angle. A retaining plate extends radially outward from the rotating component, and supports the bristles from centrifugal loading in an operative state of a turbomachine. A bristle shield extends radially outward along a length of the bristles, such that the bristle shield is configured to shield the bristles from flow during an operative state of the turbomachine. The bristles are located between the retaining plate and the bristle shield. A circumferential groove has a downstream side and an upstream side, and a side plate is attached to the upstream side. The fixed end of the bristles is attached to the upstream side of the groove by the side plate.